Java Platform Module System

Stephan Herrmann stephan.herrmann at
Tue Apr 25 08:20:44 UTC 2017

On 25.04.2017 03:50, Alex Buckley wrote:
> On 4/24/2017 5:22 PM, Stephan Herrmann wrote:
>> Obviously, defining JPMS is not done in index.html itself but delegated
>> to individual documents.
>> One of the linked documents is a version of JLS with changes on behalf
>> of JSR 376.
>> Jay's question was triggered by the observation that this exact version
>> of JLS contains references like these:
>>   - "the host system must use the Java Platform Module System to
>> determine ..."
>>   - "A 'dependency' is the module resolved by the Java Platform Module
>> System
>>     for a given requires directive."
>>   - "The Java programming language does not distinguish between named
>> modules
>>     specified explicitly in module declarations versus named modules
>> specified by the
>>     Java Platform Module System when it detects a JAR file on the
>> modulepath
>>     ('automatic modules')"
>> This creates the impression that for implementing a compiler for JPMS
>> another document must be consulted in addition to JLS, but the
>> reference "specified by the JPMS" gives no clue were to look, as it
>> appears inside the specification ofJPMS.
> Dependency resolution in JPMS is accomplished by the static 'resolve' method of java.lang.module.Configuration.
> Alex

Are you saying the semantics of JPMS depends on the implementation
of one or more methods in java.lang.module.Configuration and friends?
Are all mentions of JPMS inside JLS intended as references into JDK API?
How are compiler engineers expected to use this information?


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